ax2 + bx + c = 0

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ax2 + bx + c = 0 by Mind Map: ax2 + bx + c = 0

1. = b2 - 4ac

2. <0: pas de solution

2.1. signe de a

3. =0: 1 solution   x =

3.1. signe de a        0 signe de a

4. >0: 2 solutions x1= x2=

4.1. signe de a       -a signe de a